Title :
Image registration using robust correlation
Author :
Kim, Jeongtae ; Fessler, Jeffrey A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
We have investigated an intensity-based image registration technique using a robust correlation coefficient as a similarity measure. The proposed method has an advantage over the ordinary correlation coefficient since it reduces the effect of "outlier" image intensity values. For the application of image registration to radiotherapy or image-guided surgery, there may be outlier samples due to the presence of the objects such as surgical instruments. We have verified the usefulness of the proposed method by simulation and phantom experiment.
Keywords :
computerised tomography; diagnostic radiography; image registration; medical image processing; radiation therapy; surgery; CT images; image-guided surgery; ordinary correlation coefficient; outlier image intensity values; phantom experiment; radiographs; radiotherapy; robust correlation coefficient; similarity measure; simulation; surgical instruments; Covariance matrix; Equations; Gaussian distribution; Image registration; Imaging phantoms; Maximum likelihood estimation; Robustness; Shape; Surgery; Surgical instruments;
Conference_Titel :
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7584-X
DOI :
10.1109/ISBI.2002.1029266